/**
 * Copyright 2000 self.com.au
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License. (http://www.apache.org/licenses/LICENSE-2.0)
 *
 * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed 
 * on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for 
 * the specific language governing permissions and limitations under the License.
 *
 * <dhamma-message src="Atisha (11th century Tibetan Buddhist master)">
 * 	The greatest achievement is selflessness. The greatest worth is self-mastery.
 * 	The greatest quality is seeking to serve others. The greatest precept is continual awareness.
 * 	The greatest medicine is the emptiness of everything. The greatest action is not conforming with the worlds ways.
 * 	The greatest magic is transmuting the passions. The greatest generosity is non-attachment.
 * 	The greatest goodness is a peaceful mind. The greatest patience is humility.
 * 	The greatest effort is not concerned with results. The greatest meditation is a mind that lets go.
 * 	The greatest wisdom is seeing through appearances. 
 * </dhamma-message>
 *
 * @author Ashin Wimalajeewa
 */
package self.amigo.editor.sheet.uml;

import java.awt.BorderLayout;

import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTabbedPane;
import javax.swing.JTextField;

import self.amigo.editor.APropertySheet;
import self.amigo.editor.cmd.PropertiesChange;
import self.amigo.elem.uml.StateTransitionView;
import self.awt.layout.VerticalFlowLayout;
import self.gee.IEditableElement;
import self.gee.editor.IPropertySheet;

public class StateTransitionSheet extends APropertySheet implements IPropertySheet {
	
	/**
	 * If the internal state of this class ever changes in such a way that it can't be defaulted,
	 * then the {@link #serialVersionUID} should be incremented to ensure serialized instances cleanly fail.  
	 */
	private static final long serialVersionUID = 1;
	
  JTabbedPane         propertySheet = new JTabbedPane();
  BorderLayout        contentPaneLayout = new BorderLayout();
  JPanel              generalTab = new JPanel();
  VerticalFlowLayout  generalPaneLayout = new VerticalFlowLayout();
  JPanel              generalPane = new JPanel();
  JScrollPane         generalScroller = new JScrollPane();
  BorderLayout        generalLayout = new BorderLayout();

  JLabel stereotypeLabel = new JLabel();
  JTextField stereotype = new JTextField();
  VerticalFlowLayout verticalFlowLayout1 = new VerticalFlowLayout();
  JLabel eventSigLabel = new JLabel();
  JTextField eventSignature = new JTextField();
  JLabel guadCondLabel = new JLabel();
  JTextField guardCondition = new JTextField();
  JLabel actionExprLabel = new JLabel();
  JTextField actionExpression = new JTextField();
  
  private IEditableElement view;
  
  public StateTransitionSheet() {
    try {
      jbInit();
    } catch(Exception e) {
      e.printStackTrace();
    }
  }
  
  private void jbInit() throws Exception {
    this.setLayout( contentPaneLayout );

    stereotypeLabel.setText("stereotype");
    eventSigLabel.setDisplayedMnemonic('N');
    eventSigLabel.setLabelFor(eventSignature);
    eventSigLabel.setText("event signature");
    eventSignature.setFocusAccelerator('N');
    
    guadCondLabel.setText("guard condition");
    actionExprLabel.setText("action expression");
    
    generalPane.setLayout(generalPaneLayout);
    generalPane.add(eventSigLabel, null);
    generalPane.add(eventSignature, null);
    generalPane.add(guadCondLabel, null);
    generalPane.add(guardCondition, null);
    generalPane.add(actionExprLabel, null);
    generalPane.add(actionExpression, null);
    generalPane.add(stereotypeLabel, null);
    generalPane.add(stereotype, null);
    
    generalScroller.getViewport().add( generalPane, null );
    generalTab.setLayout(generalLayout);
    generalTab.add( generalScroller, BorderLayout.CENTER );
    
    this.add(propertySheet, BorderLayout.CENTER);
    propertySheet.add(generalTab, "General");
  }
  
  public void inspect( Object toDisplay ) {
    if ( toDisplay instanceof StateTransitionView ) {
      view = (IEditableElement) toDisplay;
      revert();
    } else 
      throw new RuntimeException( "Invalid Graphic element to display:" + toDisplay );
  }
  
  public void accept() {
    if ( view == null )
      return;

    store.put( StateTransitionView.STEREOTYPE_PROP, stereotype.getText() );
    store.put( StateTransitionView.EVENT_SIG_PROP, eventSignature.getText() );
    store.put( StateTransitionView.GUARD_COND_PROP, guardCondition.getText() );
    store.put( StateTransitionView.ACTION_EXPR_PROP, actionExpression.getText() );
    
    PropertiesChange cmd = new PropertiesChange( editor, view, store );
    cmd.executeIfRequired();
  }
  
  public void revert() {
    if ( view == null )
      return;

    store.clear();
    view.getProperties( store );  
    
    stereotype.setText( (String) store.get(StateTransitionView.STEREOTYPE_PROP) );
    eventSignature.setText( (String) store.get(StateTransitionView.EVENT_SIG_PROP) );
    guardCondition.setText( (String) store.get(StateTransitionView.GUARD_COND_PROP) );
    actionExpression.setText( (String) store.get(StateTransitionView.ACTION_EXPR_PROP) );
  }
  
  public Object getObjectUnderInspection() {
    return view;
  }
}
